CN114482500A

CN114482500A - Rail type walking cage body device for building oil storage tank

Info

Publication number: CN114482500A
Application number: CN202210128070.XA
Authority: CN
Inventors: 敖武平; 朱雨雷; 周璐舰
Original assignee: Zhoushan Cosco Shipping Heavy Industry Co ltd
Current assignee: Zhoushan Cosco Shipping Heavy Industry Co ltd
Priority date: 2022-02-11
Filing date: 2022-02-11
Publication date: 2022-05-13
Anticipated expiration: 2042-02-11
Also published as: CN114482500B

Abstract

The utility model provides a build rail walking cage body device for oil storage tank, including the cage body and cage body walking track, wherein cage body walking track sets up on the outside basis of oil storage tank, and set up around the outer wall of oil storage tank, the cage body is the cuboid steel frame structure with oil storage tank height matched with, the cage body sets up in the orbital top of cage body walking, and can follow cage body walking track around oil storage tank central circular motion, the lower extreme welded fastening of the cage body has the support base, the lower extreme that supports the base is equipped with and cage body walking track complex gyro wheel and cage body travel driving mechanism, the top of the cage body is equipped with prevents empting insurance structure, one side that the cage body is close to the oil storage tank is equipped with rolling device and prevents empting device. The steel pipe scaffold has the advantages of reasonable structure, low cost, safe and reliable use, effectively solving the problems of high cost, long period and difficult management of the traditional steel pipe scaffold, reducing the labor intensity of workers, improving the labor production efficiency and ensuring the construction safety.

Description

Rail type walking cage body device for building oil storage tank

Technical Field

The invention belongs to the technical field of construction of medium-sized steel oil storage tanks, and relates to a rail walking cage body device for constructing an oil storage tank, which is used for the whole-process construction of an external wall plate of a tank body in the construction process of the oil storage tank.

Background

In the process of building the oil storage tank, a large amount of aloft work exists on the circumferential outer wall plate, including outer wall plate welding seam polishing, welding seam nondestructive testing, pipe system and support installation, surface paint spraying and the like, all the aloft work platform needs to be built for many times for work, and a landing steel pipe scaffold with the height of tens of meters for one week is often built on the outer side of the wall plate of the oil storage tank in the past building process for building a large area of the work platform. It has the disadvantages that: the steel pipe scaffold is large in volume, the scaffold is made of more materials, the erection period is long, and the scaffold is erected and dismantled by a large amount of labor, time and labor are wasted; there is also a certain potential safety hazard.

Therefore, a new device needs to be designed to replace the existing floor-type fixed steel pipe scaffold, so as to improve the labor production efficiency, reduce the labor intensity of workers and ensure the construction safety.

Disclosure of Invention

The invention aims to solve the technical problem of providing a rail walking cage device for building an oil storage tank, which has the advantages of reasonable structure, low cost, safe and reliable use and aims to solve the technical problem of the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a build rail-mounted cage body device for oil storage tank which characterized in that: including the cage body and the walking track of the cage body, wherein the walking track setting of the cage body is on the outside basis of oil storage tank, and set up around the outer wall of oil storage tank, the cage body be with the high matched with cuboid steel frame construction of oil storage tank, the cage body sets up in the orbital top of cage body walking, and can follow the walking track of the cage body around the central circular motion of oil storage tank, the lower extreme welded fastening of the cage body has the support base, the lower extreme that supports the base is equipped with and walks orbital complex gyro wheel and cage body travel driving mechanism with the cage body, the top of the cage body is equipped with prevents empting insurance structure, one side that the cage body is close to the oil storage tank is equipped with rolling device and prevents empting device.

As an improvement, the cage body is formed by welding angle steel, a plurality of transverse thin steel pipes which can be used as crawling ladders or guardrails are welded on the left side and the right side of the cage body at uniform intervals along the length direction, and staggered opening platforms are arranged in the cage body at intervals along the length direction.

Further, the platform is opened to alternating expression comprises two flower steel sheets and a plurality of thickness steel pipe about by, and two flower steel sheet sizes are one big one little about, and wherein big one is fixed, and little one can upwards freely open, and two flower steel sheets of upper and lower adjacent platform are crisscross the setting about, and the interval of upper and lower adjacent platform is 1900 ~ 2100mm, and the front and back both sides of the cage body correspond and the platform welding has the slant angle steel that is used for strengthening the support, and the interval of horizontal thin steel pipe is 340 ~ 360 mm.

Further, the support base passes through rectangle steel sheet and cage body welded fastening, and the lower extreme welding of support base has the gyro wheel mounting bracket, and the gyro wheel mounting bracket includes the backup pad, and two support otic placodes about the lower extreme welding of backup pad has been seted up on the support otic placode and has been run through the shaft hole, and the gyro wheel is rotationally installed and is located between two support otic placodes on the straight axle, and the both ends of straight axle are passed the shaft hole that runs through of support otic placode and are passed through the nut fixed, and it has the bearing to embed between the both ends of gyro wheel and straight axle.

Further, the cage body walking track includes the circular track that sets up around the oil storage tank outside, and the welding of circular track's lower extreme has horizontal supporting member and vertical supporting member, and wherein horizontal supporting member welds the lower terminal surface at circular track, and the inboard of horizontal supporting member is fixed with the up end of oil storage tank basis, and the upper end of vertical supporting member supports with the bottom surface counterbalance of the lower extreme welded fastening of horizontal supporting member, lower extreme and oil storage tank basis.

Further, the anti-toppling safety structure on the top end of the cage body is composed of a steel wire rope, a first connecting plate and a shackle, wherein the first connecting plate is welded and fixed on the top end of the cage body, the shackle is fixed on the connecting plate, one end of the steel wire rope is connected with the shackle, and the other end of the steel wire rope is connected with the center of the fixed top of the oil storage tank.

Further, the rolling device sets up the upper portion position that is close to oil storage tank one side at the cage body, the rolling device is by two upper and lower horizontal support angle steel that set up, the rolling element, embedded bearing, the connecting axle, the nut equipment forms, the position of keeping away from the cage body between two support angle steel is installed through the connecting axle to the rolling element, embedded bearing installs on the connecting axle, the setting is at the upper and lower both ends of rolling body, the hoop welding has the enhancement angle steel of an F shape in the tank wall outside of oil storage tank, the rolling element offsets with the outer wall of strengthening the angle steel, when the cage body rotates along cage body walking track, the rolling element is tightly along strengthening the angle steel and rolling along with the cage body together.

Still further, the anti-toppling device is arranged at the upper portion of one side, close to the oil storage tank, of the cage body, the anti-toppling device is located on the left side and the right side of the rolling device and comprises a second connecting plate, an F-shaped component and an L-shaped component, the second connecting plate is fixed to the outer wall of the cage body, one end of the F-shaped component is fixed to the second connecting plate, a notch of the F-shaped component faces upwards, a notch of the reinforcing angle steel faces downwards, the outer end of the F-shaped component upwards inserts into the notch of the reinforcing angle steel for limiting, the lower end of the L-shaped component is fixed to the F-shaped component, the upper end of the L-shaped component is arranged above the reinforcing angle steel after being bent, and a small plastic roller which abuts against the upper end of the reinforcing angle steel is installed on the lower end face of the bent portion of the upper end of the L-shaped component.

And furthermore, the depth of the notches of the F-shaped member and the second reinforcing angle steel is not less than 60mm, and the small plastic roller is fixed on the lower end face of the bent part at the upper end of the L-shaped member through a small roller bracket.

And finally, the cage body walking driving device is arranged at the lower end of the supporting base and is connected with the rolling mounting frame, and the cage body walking driving device comprises a motor and a distribution box.

Compared with the prior art, the invention has the advantages that: the cage body and the cage body walking track are arranged, and the cage body moves along the outer side of the oil storage tank under the driving of the cage body walking driving mechanism through the rollers; the top of the cage body is equipped with prevents empting insurance structure, and one side that the cage body is close to the oil storage tank is equipped with rolling device and prevents empting the device, prevents effectively that the cage body from empting for overall structure is stable reliable, and the while friction reduction makes the roll convenient. The invention has reasonable structure, low cost and safe and reliable use, effectively solves the problems of high cost, long period and difficult management of the traditional steel pipe used for setting up the landing scaffold, lightens the labor intensity of workers, improves the labor production efficiency and ensures the construction safety.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a side view of the other side of FIG. 1;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 6 is an enlarged view of a portion of the area C in FIG. 1;

FIG. 7 is an enlarged view of a portion of the area D in FIG. 2;

FIG. 8 is an enlarged view of a portion of the rolling device of FIG. 2;

fig. 9 is a partially enlarged view of the anti-toppling device of fig. 3.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1-9, a build rail-mounted cage body device for oil storage tank, including cage body 1 and cage body walking track 2, wherein cage body walking track 2 sets up on the outside basis of oil storage tank, and set up around the periphery of oil storage tank, cage body 1 is the cuboid steel frame structure with oil storage tank height matched with, cage body 1 sets up in cage body walking track 2's top, and can follow cage body walking track 2 around oil storage tank central circular motion, the lower extreme welded fastening of cage body 1 has support base 3, the lower extreme that supports base 3 is equipped with cage body walking track 2 complex gyro wheel 4 and cage body travel driving mechanism 9, the top of cage body 1 is equipped with prevents empting insurance structure 6, one side that the cage body is close to the oil storage tank is equipped with rolling device 7 and empting device 8.

The concrete structure is as follows: the cage body 1 is formed by welding section steel angles, a plurality of transverse thin steel pipes 13 capable of being used as crawling ladders or guardrails are welded on the left side and the right side of the cage body 1 along the length direction at even intervals, and the distance between the transverse thin steel pipes 13 is 340-360 mm. Staggered opening platforms 10 are arranged in the cage body 1 at intervals along the length direction. The staggered opening platform 10 is composed of a left and a right two-piece steel perforated

plates

101 and 102 and a plurality of thick and thin steel pipes, the sizes of the left and the right two-piece steel

perforated plates

101 and 102 are one big and one small, four thick

transverse steel pipes

12 and 11 are welded and fixed with the cage body 1 at the left, the right, the front and the back of the left and the right, the big 101-piece steel perforated plates of the two-piece steel

perforated plates

101 and 102 are fixed, the small one-piece steel perforated plate 102 can be opened upwards freely, the thin steel pipe 103 is arranged between the two steel

perforated plates

101 and 102, the two steel perforated

plates

101 and 102 of the upper and the lower adjacent platforms 10 are staggered at the left and the right, the distance between the upper and the lower adjacent platforms 10 is 1900-2100 mm, therefore, the staggered opening platform can pass through and play a role in preventing high falling, and oblique angle steel 14 used for reinforcing support are welded on the front and the back sides of the cage body 1 and the platforms 10 correspondingly.

Support base 3 and cage 1 welded fastening through rectangular steel plate 34, support base 3 includes bottom plate 35, vertical angle steel 31, inboard slant angle steel 33, outside slant angle steel 32, vertical angle steel 31 is 6 that set up from beginning to end, slant angle steel 31 welded fastening is between slant angle steel 33, outside slant angle steel 32 supports and is fixed with bottom plate 35 in the outside of vertical angle steel 31, the welding has set square 36 to support between rectangular steel plate 34 and the vertical angle steel 31. The lower extreme welding of support base 3 has roller mounting bracket 40, roller mounting bracket 40 includes backup pad 401, two support otic placodes 402 about the lower extreme welding of backup pad 401 has been seted up on the support otic placode 402 and has been run through the shaft hole, gyro wheel 4 rotationally installs and lies in between two support otic placodes 402 on straight axle 403, the both ends of straight axle 403 pass the shaft hole that runs through of supporting otic placode 402 and pass through nut 404 fixed, it has bearing 405 to embed between the both ends of gyro wheel 4 and straight axle 403, as figure 6, 7.

The cage body walking track 2 comprises a circular track 21 arranged around the outer side of the oil storage tank, a transverse supporting member 22 and a vertical supporting member 23 are welded at the lower end of the circular track 21, the transverse supporting member 22 is welded at the lower end face of the circular track 20, the inner side of the transverse supporting member 22 is fixed with the upper end face of the oil storage tank foundation 300, the upper end of the vertical supporting member 23 is fixedly welded with the lower end of the transverse supporting member 22, and the lower end of the vertical supporting member is supported against the bottom face of the oil storage tank foundation 300, as shown in fig. 6 and 7.

The falling prevention safety structure 6 on the top end of the cage body 1 is composed of a steel wire rope 61, a first connecting plate 62 and shackles 63, wherein the first connecting plate 62 is welded and fixed on the top end of the cage body 1, the shackles 63 are fixed on the connecting plate 62, one end of the steel wire rope 61 is connected with the shackles 63, and the other end of the steel wire rope is connected with the center of the fixed top of the oil storage tank. The rolling device 7 is arranged at the upper part of the cage body 1 close to one side of the oil storage tank, the rolling device 7 is formed by assembling an upper supporting angle steel 71 and a lower supporting angle steel 71 which are transversely arranged, a rolling body 72, an embedded bearing 75, a connecting shaft 73 and a nut 74, the rolling body 72 is arranged at the position which is far away from the cage body 1 between the two supporting angle steels 71 through the connecting shaft 73, the embedded bearing 75 is arranged on the connecting shaft 73 and is arranged at the upper end and the lower end of the rolling body 72, an F-shaped reinforcing angle steel 200 is welded on the outer side of the tank wall 100 of the oil storage tank in the circumferential direction, the rolling body 72 is abutted to the outer wall of the reinforcing angle steel 200, when the cage body 1 rotates along the cage body walking track 2, the rolling body 72 tightly rolls along the reinforcing angle steel 200 along with the cage body 1, and the effect of reducing friction force is achieved, and the effect is shown in figure 8.

The anti-toppling device 8 is arranged at the upper part of one side, close to the oil storage tank, of the cage body 1, the anti-toppling device 8 is located on the left side and the right side of the rolling device 7, the anti-toppling device 8 comprises a second connecting plate 81, an F-shaped component 82 and an L-shaped component 83, the second connecting plate 81 is fixed to the outer wall of the cage body 1, one end of the F-shaped component 82 is fixed to the second connecting plate 81, a notch of the F-shaped component 82 faces upwards, a notch of the reinforcing angle steel 200 faces downwards, the outer end of the F-shaped component 82 is upwards inserted into the notch of the reinforcing angle steel 200 for limiting, the cage body 1 is limited to move outwards, the lower end of the L-shaped component 83 is fixed to the F-shaped component 82, the upper end of the L-shaped component 83 is arranged above the reinforcing angle steel 200 after being bent, and a small plastic roller 84 which abuts against the upper end of the reinforcing angle steel 200 is installed on the lower end face of the upper end bending position of the L-shaped component 83. The notch depths of the F-shaped member 82 and the second reinforcing angle steel 200 are not less than 60mm, the plastic small roller 84 is fixed on the lower end face of the bent part of the upper end of the L-shaped member 83 through the small roller bracket 85, and the structure of the small roller bracket 85 is similar to that of the roller mounting frame 40. The plastic small idler wheels 84 play a role in stabilizing the position of the F-shaped member 82, the whole anti-toppling device 8 is connected through a single bolt through hole, the whole anti-toppling device 8 can be guaranteed to move in certain displacement in the up-down direction, the anti-toppling device is prevented from being damaged and losing efficacy, and the anti-toppling device is ingenious in design, and is shown in fig. 9.

Cage body travel drive unit 9 sets up and is connected with rolling mounting bracket 40 at the lower extreme that supports base 3, and cage body travel drive unit 9 includes motor 91, block terminal 92, can dispose reduction gear and realize that cage body 1 centers on the oil storage tank outside slow movement along cage body walking track 2.

The dimensional specifications of the components of the present embodiment are specifically described below:

the size of the cage body 1 in the embodiment is about 1600mm in width, 660mm in thickness and 19000mm in height, and the size can be reasonably adjusted according to actual needs.

The cage body 1, the oblique angle steel 14, the transverse angle steel 11 and the transverse angle steel 12 respectively consist of equal-edge angle steel, and the specifications are respectively L63 × 63 × 5mm thick × 18000mm long, L63 × 63 × 5mm thick × 2460mm long, L63 × 63 × 5mm thick × 1950mm long, and L63 × 63 × 5mm thick × 650mm long; the specification of the transverse thin steel tube 13 is phi 27mm diameter x 2mm thickness x 590mm length;

the specification of the figured steel plate 101 of the staggered opening platform 10 is 970mm long multiplied by 600mm wide multiplied by 5mm thick, and the specification of the figured steel plate 102 is 550mm long multiplied by 600mm wide multiplied by 5mm thick;

the vertical angle steel 31, the inner side oblique angle steel 33 and the outer side oblique angle steel 32 of the supporting base 3 are all equal-edge angle steel L63 with the thickness of 63 with the thickness of 5 mm; the rectangular steel plate 17 is formed by cutting a steel plate, and the specification is 1600mm long multiplied by 660mm wide multiplied by 16mm thick; the specifications of the set square 36 are respectively 200mm long, 200mm wide and 16mm thick;

the specification of a supporting lug plate 402 of the roller mounting rack 40 is 220mm long multiplied by 190mm high multiplied by 20mm thick, the specification of a supporting plate 401 is 320mm long multiplied by 250mm wide multiplied by 20mm thick, a roller 4 is manufactured by machining, the external diameter of the phi 220mm wheel is multiplied by 1550mm thick multiplied by 80mm groove width, the material is C45E4, and a straight shaft, a nut 404 and an embedded bearing 405 are matched and selected according to the use load 2T;

the circular track 21 and the transverse supporting member 22 of the cage body walking track 2 are respectively channel steel with 20a marks, and the transverse supporting member 22 is equal angle steel L100 × 6mm thick;

the support angle steel 71 of the rolling device 7 is equal angle steel L100 x 6mm thick, the rolling body 72 is machined, the specification is phi 70mm wheel external diameter x 170mm long, the connecting shaft 73, the nut 74 and the embedded bearing 75 are matched and selected according to the load 1T; the specification of a connecting plate 81 of the anti-dumping device 8 is 150cm long multiplied by 150mm wide multiplied by 16mm thick, the specification of a bolt 38 is M20mm diameter multiplied by 60mm long, the specification of a bolt 86 is M14mm diameter multiplied by 60mm long, the specification of an F-shaped member 82 is 330mm long multiplied by 190mm wide multiplied by 16mm thick, the specification of an L-shaped member 83 is 400mm long multiplied by 250mm wide multiplied by 16mm thick, and the specification of a small plastic roller 84 is phi 55mm wheel outer diameter;

the specification of a steel wire rope 61 of the anti-toppling safety structure 6 at the top end of the cage body 1 is phi 12.5mm in diameter, the specification of a connecting plate 62 is 80mm long, 80mm wide and 14mm thick, and the specification of a shackle 63 is 1.5T.

When the rail-mounted walking cage body device is installed, the crane is adopted for hoisting and installation, the grooves of the rollers 4 fall onto the rails 21, then the anti-dumping device 8 on the upper portion of the cage body 1 is installed, the rail-mounted walking cage body device cannot walk too fast, sealing is not needed when the rail-mounted walking cage body device is not used, and accidental movement is prevented.

When the cage body 1 above the track of the device is installed, the cage body slightly inclines towards the inner side, the difference value of the vertical verticality is about 10cm, and the safety and the reliability of the device during working can be guaranteed.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a build rail mounted cage body device for oil storage tank which characterized in that: including the cage body and the cage body track of walking, wherein the cage body track of walking sets up on the outside basis of oil storage tank, and set up around the outer wall of oil storage tank, the cage body be with the high matched with cuboid steel frame construction of oil storage tank, the cage body sets up in the orbital top of cage body walking, and can follow the central circular motion of cage body track of walking around the oil storage tank, the lower extreme welded fastening of the cage body has the support base, the lower extreme that supports the base be equipped with cage body track complex gyro wheel and cage body travel driving mechanism, the top of the cage body is equipped with prevents empting insurance structure, one side that the cage body is close to the oil storage tank is equipped with rolling device and prevents empting device.

2. The device of claim 1, wherein the cage comprises: the cage body adopts the angle steel welding to form, and the side has a plurality of horizontal thin steel pipes that can regard as cat ladder or guardrail along the even interval welding of length direction about the cage body, and the cage is internal to be equipped with alternating expression open platform along the length direction interval.

3. The device of claim 2, wherein the cage comprises: the platform is opened to alternating expression comprises two flower steel sheets and a plurality of thickness steel pipe about by, and two flower steel sheet sizes are one big one little about, and wherein big one is fixed, and little one can upwards freely open, and crisscross setting is controlled to two flower steel sheets of upper and lower adjacent platform, and the interval of upper and lower adjacent platform is 1900 ~ 2100mm, and the slant angle steel that is used for strengthening the support is welded with the platform to both sides correspondence around the cage body, and the interval of horizontal thin steel pipe is 340 ~ 360 mm.

4. The device of claim 1, wherein the cage comprises: the support base passes through rectangle steel sheet and cage body welded fastening, and the lower extreme welding of support base has the gyro wheel mounting bracket, and the gyro wheel mounting bracket includes the backup pad, and two support otic placodes about the lower extreme welding of backup pad has been seted up on the support otic placode and has been run through the shaft hole, and the gyro wheel is rotationally installed and is located between two support otic placodes on the straight axle, and the both ends of straight axle are passed the shaft hole that runs through that supports the otic placode and are passed through the nut fixed, and it has the bearing to embed between the both ends of gyro wheel and straight axle.

5. The device of claim 1, wherein the cage comprises: the cage body walking track comprises a circular track arranged around the outer side of the oil storage tank, a transverse supporting member and a vertical supporting member are welded at the lower end of the circular track, the transverse supporting member is welded at the lower end face of the circular track, the inner side of the transverse supporting member is fixed with the upper end face of the oil storage tank foundation, and the upper end of the vertical supporting member is fixedly welded with the lower end of the transverse supporting member and the bottom face of the oil storage tank foundation is supported in an abutting mode.

6. The device of claim 1, wherein the cage comprises: the anti-toppling safety structure on the top end of the cage body is composed of a steel wire rope, a first connecting plate and a shackle, wherein the first connecting plate is welded and fixed on the top end of the cage body, the shackle is fixed on the connecting plate, one end of the steel wire rope is connected with the shackle, and the other end of the steel wire rope is connected with the center of the fixed top of the oil storage tank.

7. The device of claim 1, wherein the cage comprises: the rolling device sets up the upper portion position that is close to oil storage tank one side at the cage body, the rolling device is by two upper and lower horizontal support angle steel that set up, the rolling element, embedded bearing, the connecting axle, the nut equipment forms, the position of keeping away from the cage body between two support angle steel is installed through the connecting axle to the rolling element, embedded bearing installs on the connecting axle, set up the upper and lower both ends at the rolling element, the reinforcement angle steel of a F shape has in the tank wall outside hoop welding of oil storage tank, the rolling element offsets with the outer wall of strengthening the angle steel, when the cage body rotates along cage body walking track, the rolling element is tightly along strengthening the angle steel and rolling along with the cage body together.

8. The device of claim 7, wherein: the utility model discloses a roll device, including cage body, anti-overturning device sets up the upper portion position that is close to oil storage tank one side at the cage body, anti-overturning device is located one side of the left and right sides of rolling device, anti-overturning device includes the second connecting plate, F type component and L shape component, the outer wall at the cage body is fixed to the second connecting plate, the one end and the second connecting plate of F type component are fixed, the notch of F type component is up, strengthen the notch of angle steel down, it is spacing that the outer end of F type component upwards inserts in the notch of strengthening the angle steel, the lower extreme and the F type component of L shape component are fixed, the upper end of L shape component sets up the top at strengthening the angle steel after buckling, install the plastics trundle that offsets with the upper end of strengthening the angle steel on the lower terminal surface of the upper end department of buckling of L shape component.

9. The device of claim 8, wherein the cage comprises: the depth of the notches of the F-shaped member and the second reinforcing angle steel is not less than 60mm, and the plastic small roller is fixed on the lower end face of the bent part at the upper end of the L-shaped member through the small roller bracket.

10. The device of claim 4, wherein the cage comprises: the cage body walking driving device is arranged at the lower end of the supporting base and connected with the rolling mounting frame, and comprises a motor and a distribution box.